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(2,4,5-TRICHLOROPHENOXY) ACETIC ACIDICSC: 0075
April 2005
CAS #: 93-76-52,4,5-T
UN #: 3345
EINECS #: 202-273-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible under specific conditions. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.    NO open flames.    Use water spray, powder.   

See Notes. PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Diarrhoea. Drowsiness. Headache. Nausea. Vomiting.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 

STORAGE
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Store in an area without drain or sewer access. 
PACKAGING
Do not transport with food and feedstuffs. 
(2,4,5-TRICHLOROPHENOXY) ACETIC ACID ICSC: 0075
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on burning. This produces toxic and corrosive gases including phosgene (see ICSC 0007) and hydrogen chloride (see ICSC 0163). The solution in water is a weak acid. 

Formula: C8H5Cl3O3 / C6H2Cl3OCH2COOH
Molecular mass: 255.5
Boiling point: No boiling point at normal pressure; decomposes on heating
Melting point: 153-158°C
Density: 1.80 g/cm³
Solubility in water, g/100ml at 25°C: 0.03
Vapour pressure at 25°C: negligible
Octanol/water partition coefficient as log Pow: 4  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. 

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly on spraying or when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
Animal tests show that this substance possibly causes toxicity to human reproduction or development. 


Occupational exposure limits
TLV: 10 mg/m3, ppm, as TWA; A4 (not classifiable as a human carcinogen).
MAK: (inhalable fraction): 2 mg/m3; peak limitation category: II(2); skin absorption (H); pregnancy risk group: C 

ENVIRONMENT
The substance is very toxic to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
Temperature of decomposition is unknown in the literature.
Commercial products may contain toxic dioxin (see ICSC 1467 2,3,7,8-TCDD).
If the substance is formulated with solvents also consult the ICSCs of these materials.
Carrier solvents used in commercial formulations may change physical and toxicological properties.
The recommendations on this card also apply to salts of 2,4,5-Trichlorophenoxyacetic acid. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn, N; R: 22-36/37/38-50/53; S: (2)-24-60-61 

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    See Also:
       Toxicological Abbreviations